康沃尔(Carnmenellis)侵入体是海西造山期后的花岗岩,多数由斑状黑云母花岗岩组成,为富轻稀土型,具轻度的Eu亏损。 单矿物与全岩的REE含量表明,REE主要富集在花岗岩的副矿物中。独居石是黑云母花岗岩中主要的含轻稀土矿物。重稀土主要分布在磷钇矿、磷灰石和锆石中;Eu主要取代Ca而进入斜长石中。 The Carnmenellis intrusions are granites after the Hercynian orogeny, mostly composed of porphyritic biotite granites, which are light-rich rare earths with a slight Eu depletion. REE contents of single minerals and whole rocks show that REE is mainly enriched in the accessory minerals of granites. Monazite is the major biotite granite containing light rare earth minerals. Heavy rare earths are mainly distributed in xenotime, apatite and zircon; Eu mainly substituted for Ca into plagioclase.